Eisrandlagen und Abflussbahnen aus der Weichselkaltzeit in der östlichen Uckermark (Brandenburg / Mecklenburg-Vorpommern)

After retreat from the Angermünder ice margin, the Weichselian inland ice sheet fell apart into different independently acting glaciers in the eastern Uckermark. In the area of the Ucker lakes three ice margins are known, from south to north: the Zichow-Golm intermediate margin, the Gerswalde margin and the Ucker margin. This paper postulates two more ice margins: a Welse North Ice Margin and a Welse South Ice Margin. The Welse South Ice Margin is a ridge in the area south of the Welse stream and can be followed over the villages Zehnebeck - Wendemark - Passow - Herrenhof - Berkholz. The Welse South Ice Margin is seen as a possible simultaneous continuation of the Zichow-Golm ice margin. Unique drainage paths and sandur at the Zichow-Golm margin and the Welse South Ice Margin could not be found. On the other hand, the meltwater of these ice margins formed so-called ‘Bändertone’ (thinly laminated clays or varved clays) in the area south of Günterberg - Biesenbrow. In the area of Wartin - Schönow - Kunow - Hohenfelde a distinct ridge can also be seen, the so-called Welse North Ice Margin. It is conceived as a possible simultaneous continuation of the Gerswalde margin. The meltwater direction was from north to south and between Wartin and Blumberg a sandur terrace was formed at a level of 50-60 m above NHN in the Randow Valley. Probably the meltwater flowed toward Güntersberg where on this second occasion varved clays (Bändertone) were formed. The Oder Valley and the Schönow-Tantow Valley were formed already at that time as subglacial valleys.